KR20170035473A - Apparatus for treating cokes oven waste water and treatment method for cokes oven waste water using the same - Google Patents

Apparatus for treating cokes oven waste water and treatment method for cokes oven waste water using the same Download PDF

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Publication number
KR20170035473A
KR20170035473A KR1020150134349A KR20150134349A KR20170035473A KR 20170035473 A KR20170035473 A KR 20170035473A KR 1020150134349 A KR1020150134349 A KR 1020150134349A KR 20150134349 A KR20150134349 A KR 20150134349A KR 20170035473 A KR20170035473 A KR 20170035473A
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South Korea
Prior art keywords
unit
coke
waste water
cod
cod concentration
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KR1020150134349A
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Korean (ko)
Inventor
이중원
박동철
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현대제철 주식회사
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Priority to KR1020150134349A priority Critical patent/KR20170035473A/en
Publication of KR20170035473A publication Critical patent/KR20170035473A/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/006—Regulation methods for biological treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Activated Sludge Processes (AREA)

Abstract

Disclosed is a coke waste water treatment apparatus and a coke waste water treatment method using the same. In one embodiment, the coke wastewater treatment apparatus includes a biological treatment unit for introducing coke wastewater through a first inflow path to generate first treated water; And a post-treatment unit connected to the biological treatment unit through a second inflow path, and the first treatment water is inflowed to generate second treatment water, wherein the first inflow path includes COD wherein the first measurement unit is electrically connected to the control unit, and the control unit receives the COD concentration value obtained from the first measurement unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coke waste water treatment apparatus and a coke waste water treatment apparatus,

The present invention relates to a coke waste water treatment apparatus and a coke waste water treatment method using the same. And more particularly, to a coke wastewater treatment apparatus having excellent coke effluent treatment efficiency and a coke wastewater treatment method using the same.

Coke wastewater discharged from the manufacturing process of coke, which is one of the steelmaking processes, has a high concentration of organic oxygen (COD) and ammonia (NH 4 -N). Therefore, the coke wastewater eliminates the high concentrations of organic substances and ammonia through a biological wastewater treatment process using microorganisms.

BACKGROUND ART [0002] The background art relating to the present invention is disclosed in Korean Patent Laid-Open Publication No. 2015-0078895 (titled "Method of analyzing COD using chromaticity and RGB value").

According to an embodiment of the present invention, there is provided a coke wastewater treatment apparatus which is excellent in economy and has excellent removal efficiency of organic substances contained in coke wastewater.

According to one embodiment of the present invention, there is provided a coke waste water treatment apparatus capable of generating and preventing sludge.

According to an embodiment of the present invention, there is provided a coke wastewater treatment method using the coke wastewater treatment apparatus.

One aspect of the present invention relates to a coke waste water treatment apparatus. In one embodiment, the coke wastewater treatment apparatus includes a biological treatment unit for introducing coke wastewater through a first inflow path to generate first treated water; And a post-treatment unit connected to the biological treatment unit through a second inflow path, wherein the first treatment water is inflowed to generate second treated water, wherein the first inflow path is provided with a COD concentration of the coke wastewater Wherein the first measurement unit is electrically connected to the control unit, and the control unit receives the COD concentration value obtained from the first measurement unit.

In one embodiment, the coke waste water may be pre-treated through a pretreatment unit and introduced into the first inflow path.

In one embodiment, the coke wastewater treatment apparatus is connected to the biological treatment unit through a third inflow path and includes a second measurement unit for measuring a COD concentration of the coke waste water, Wherein the first inlet path is provided with a flow path changing means for changing the flow path of the coke wastewater to flow into the organic substance removing unit, The flow path changing means is electrically connected to the control portion and controlled, and the control portion can receive the COD concentration value obtained from the second measurement portion.

In one embodiment, the organic material removal unit may reduce the COD concentration of the coke waste water by using at least one of a flocculant, a Fenton Oxidation agent, ozone, and activated carbon.

In one embodiment, when the COD concentration value of the coke effluent measured by the first measuring unit is less than 3,000 ppm, the coke effluent is introduced into the biological treatment unit to generate a first treated water, Processing unit to generate a second process water.

In one embodiment, when the COD concentration value of the coke wastewater measured by the first measuring unit exceeds 3,000 ppm, the control unit controls the flow channel changing unit to flow the coke wastewater into the organic substance removing unit to increase the COD concentration And the COD concentration-reduced coke effluent can be introduced into the biological treatment unit through the third inflow path.

Another aspect of the present invention relates to a coke wastewater treatment method using the coke wastewater treatment apparatus. In one embodiment, the method for treating coke wastewater comprises: measuring a COD (chemical oxygen demand) concentration of coke wastewater; Introducing the coke waste water into the biological treatment unit to generate a first treated water when the COD concentration value of the measured coke waste water is 3,000 ppm or less; And supplying the first treated water to a post-treatment unit to generate a second treated water.

In one embodiment, when the COD concentration value of the measured coke wastewater exceeds 3,000 ppm, introducing the coke wastewater into the organic material removal unit to reduce COD; Introducing the COD-reduced coke effluent into the biological treatment unit to produce a first treated water; And supplying the first process water to a post-processing unit to generate a second process water.

When the coke wastewater treatment method using the coke wastewater treatment apparatus of the present invention is applied, the treatment time and energy of the coke wastewater can be reduced and the economical efficiency is improved. Even when a high concentration organic material flows, And the removal efficiency of the organic substances contained in the coke wastewater can be excellent.

1 shows a cokes wastewater treatment apparatus according to one embodiment of the present invention.
2 illustrates a method of treating coke wastewater according to one embodiment of the present invention.

Hereinafter, the present invention will be described in detail. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to be exemplary, self-explanatory, allowing for equivalent explanations of the present invention.

One aspect of the present invention relates to a coke waste water treatment apparatus. 1 shows a cokes wastewater treatment apparatus according to one embodiment of the present invention. Referring to FIG. 1, the coke waste water treatment apparatus 1000 includes a biological treatment unit 110 for introducing coke waste water through a first inflow path 10 to generate first treated water; And a post-treatment unit (130) connected to the biological treatment unit (110) through a second inflow path (12) and into which the first treatment water is introduced to generate second treatment water, wherein the first inflow path The first measuring unit 201 is electrically connected to the controller 140 and is controlled by the controller 140. The controller 140 controls the first measuring unit 201 to measure the COD concentration of the coke waste water, And the COD concentration value obtained from the measuring unit 201 is received.

In the present specification, the " coke waste water " may be discharged from a coke manufacturing process used as a reducing agent for iron ores. In one embodiment, the cokes wastewater has a pH of 6.0 to 7.5 and may include ammonia, a phenolic compound, and a cyanide compound.

In one embodiment, the cokes wastewater may be introduced into the first inlet 10 by removing pretreatment particulate matter, volatile matter, and oil contained in the cokes wastewater through a pretreatment unit (not shown).

The biological treatment unit 110 introduces the coke waste water through the first inflow path 10 to generate the first treated water. The biological processing unit 110 may use conventional ones. For example, aerobic microorganisms can be used to remove ammonia nitrogen compounds contained in the coke waste water.

The first measurement unit 201 measures the COD concentration of the coke waste water in real time and transmits the measured COD concentration value to the control unit 140.

The post-treatment unit 130 introduces the first treated water through the second inflow path 12 and further removes contaminants contained in the first treated water to generate second treated water. And the generated second treated water may be discharged to the outside through the discharge part 14. [ The post-processing unit 130 may use conventional ones. In one embodiment, the post-treatment unit 130 may treat the first treated water with ozone, plasma, or magnetic field energy, and then filter it with activated carbon or the like.

In another embodiment of the present invention, the first treated water that has flowed into the after treatment unit 130 through the second inflow path 12 may be discharged through the discharge unit 14 without further treatment.

Referring to FIG. 1, in one embodiment, the coke wastewater treatment apparatus 1000 is connected to the biological treatment unit 110 through a third inflow conduit 16, and a second measurement for measuring the COD concentration of the coke effluent And an organic material removal unit 120 for removing organic substances from the coke wastewater and reducing the COD concentration of the coke wastewater. The second measuring unit 202 and the flow path changing means 301 are electrically connected to and controlled by the control unit 140. The control unit 140 is connected to the control unit 140, The second measuring unit 140 can receive the COD concentration value obtained from the second measuring unit 202.

In one embodiment, the flow path changing means 301 can use a conventional valve.

The second measurement unit 202 may measure the COD concentration of the coke waste water flowing into the organic material removal unit 120 in real time and may transmit the measured COD concentration value to the control unit 140.

In one embodiment, the organic material removal unit 120 can reduce the COD concentration of the coke wastewater using conventional removal means. For example, the COD concentration of the coke waste water can be reduced by using at least one of a flocculant, a Fenton Oxidation agent, ozone, and activated carbon. By using the above-mentioned removing means, the COD concentration of the coke waste water can be easily reduced.

In one embodiment, the coagulant may comprise at least one of an inorganic coagulant and a polymer coagulant. The inorganic coagulant may include one or more of ferrous chloride, ferric chloride, magnesium chloride, calcium chloride, cobalt chloride, and nickel chloride. The polymer flocculant may include one or more of polyaluminum chloride (PAC), aluminum polysulfate (PASS), polyhydroxy aluminum chloride (PACS), and polyamines. In one embodiment, the coagulant may be treated to the incoming coke wastewater to reduce the COD concentration.

Fenton the oxidant in one embodiment may include iron sulfate (FeSO 4) and hydrogen peroxide (H 2 O 2).

In one embodiment, when the COD concentration value of the coke wastewater measured by the first measuring unit 201 is less than 3,000 ppm, the coke wastewater flows into the biological treatment unit 110 through the first inflow path 10, And the generated first process water may flow into the second inflow path 12 and may be supplied to the post-processing unit 130 to generate the second process water. When the wastewater treatment is performed as described above, the efficiency of the coke wastewater treatment process can be excellent. If the coke wastewater has a COD concentration value in the above range, even if the coke wastewater flows into the biological treatment unit 110, the process efficiency may not be deteriorated.

In another embodiment, when the COD concentration value of the coke waste water measured by the first measuring unit 201 exceeds 3,000 ppm, the control unit 140 controls the flow path changing means 301 so that the coke wastewater flows into the organic substance removing unit The COD concentration can be reduced and the coke effluent with the COD concentration reduced can be introduced into the biological treatment unit 110 through the third inflow channel 16. [ When the high concentration organic material flows in the control as described above, it is possible to prevent deterioration of the coke wastewater treatment process while preventing the biological treatment unit 110 from being damaged, , The efficiency of nitrification in the biological wastewater treatment process and the deterioration of sludge sedimentation property can be prevented. For example, when the COD concentration value of the coke waste water is more than 3,000 ppm but not more than 10,000 ppm, the above-mentioned process can be performed.

Another aspect of the present invention relates to a coke wastewater treatment method using the coke wastewater treatment apparatus. 2 illustrates a method of treating coke wastewater according to one embodiment of the present invention.

Referring to FIG. 2, the method for treating coke waste water comprises the steps of: measuring a COD (chemical oxygen demand) concentration of coke waste water; Introducing the coke waste water into the biological treatment unit 110 to generate a first treated water when the COD concentration value of the measured coke waste water is 3,000 ppm or less; And supplying the first process water to the post-processing unit (130) to generate a second process water.

In another embodiment, when the COD concentration value of the measured coke wastewater exceeds 3,000 ppm, introducing the coke wastewater into the organic material removal unit 120 to reduce COD; Introducing the COD-reduced coke effluent into the biological treatment unit (110) to produce a first treated water; And supplying the first process water to the post-processing unit 130 to generate a second process water.

In one embodiment, the control unit 140 controls the flow path changing means 301 to flow the coke wastewater into the organic material removing unit 120 to reduce the COD concentration.

In one embodiment, if the COD concentration measured in the second measurement section 302 exceeds a predetermined value, it may flow into the biological processing unit 110 through the third inlet path 16. For example, more than 1,000 ppm, it may flow into the biological treatment unit 110.

When the coke wastewater treatment method using the coke wastewater treatment apparatus of the present invention is applied, the treatment time and energy of the coke wastewater can be reduced and the economical efficiency is improved. Even when a high concentration organic material flows, And the removal efficiency of the organic substances contained in the coke wastewater can be excellent.

Hereinafter, the configuration and operation of the present invention will be described in more detail with reference to preferred embodiments of the present invention. It is to be understood, however, that the same is by way of illustration and example only and is not to be construed in a limiting sense.

Example

The coke waste water treatment apparatus 1000 shown in FIG. 1 was used to treat the coke waste water. Volatile matter, volatile matter and oil content of the coke waste water were removed through the pretreatment unit and flowed into the first inflow path (10).

The COD concentration value of the coke waste water measured by the first measuring unit 201 was measured to be 5,100 ppm and the control unit 140 controls the flow path changing means 301 to return the coke waste water to the organic material removing unit 120 And COD of the coke waste water was reduced by using a flocculant (polychlorinated aluminum) and activated carbon. The COD concentration value of the coke waste water measured at the second measuring unit 202 was measured at 2,000 ppm and transferred to the biological treatment unit 110 through the third inflow path 16 to generate the first treated water . The generated first process water is transferred to the post-treatment unit 130 through the second inflow path 12 to generate the second process water and discharged to the outside through the discharge unit 14. [ The COD concentration value of the second treated water measured at the discharge portion 14 was measured to be 40 ppm.

In the case of applying the coke wastewater treatment method using the coke wastewater treatment apparatus of the present invention, deterioration of the biological treatment process efficiency can be prevented even when a high concentration organic material flows into the coke wastewater treatment apparatus, The removal efficiency of the organic material can be excellent.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: first inlet path 12: second inlet path
14: discharge part 16: third inflow path
110: biological treatment unit 120: organic substance removal unit
130: post-processing unit 140:
201: first measuring unit 202: second measuring unit
301: flow path changing means 1000: coke waste water treatment device

Claims (8)

A biological treatment unit for introducing coke waste water through the first inflow path to generate first treated water; And
And a post-treatment unit connected to the biological treatment unit via a second inflow path, and the first treatment water is introduced to generate second treatment water,
Wherein the first inlet path is provided with a first measuring unit for measuring a COD (chemical oxygen demand) concentration of the coke waste water,
Wherein the first measurement unit is electrically connected to the control unit,
Wherein the control unit receives the COD concentration value obtained from the first measuring unit.
The method according to claim 1,
Wherein the coke waste water is pretreated through a pretreatment unit and is introduced into the first inflow passage.
The method according to claim 1,
The coke wastewater treatment apparatus includes a second measurement unit connected to the biological treatment unit through a third inflow path and measuring the COD concentration of the coke waste water, and the organic substance of the coke waste water is removed to reduce the COD concentration Further comprising an organic material removal unit,
Wherein the first inflow path is provided with flow path changing means for changing the flow path of the coke wastewater to flow into the organic substance removing unit,
Wherein the second measuring unit and the flow path changing unit are electrically connected to the control unit,
Wherein the control unit receives the COD concentration value obtained from the second measurement unit.
The method of claim 3,
Wherein the organic substance removing unit reduces the COD concentration of the coke waste water by using at least one of a flocculant, a Fenton oxidizing agent, ozone, and activated carbon.
The method according to claim 1,
When the COD concentration value of the coke waste water measured by the first measuring unit is less than 3,000 ppm,
Introducing the coke wastewater into the biological treatment unit to produce a first treated water, and
And supplies the generated first treated water to the post-treatment unit to generate second treated water.
The method of claim 3,
When the COD concentration value of the coke waste water measured by the first measuring unit exceeds 3,000 ppm,
The control unit controls the flow path changing means to flow the coke wastewater into the organic material removing unit to reduce the COD concentration,
And the coke wastewater having the COD concentration reduced flows into the biological treatment unit through the third inflow passage.
Measuring a COD (chemical oxygen demand) concentration of the coke waste water;
Introducing the coke waste water into the biological treatment unit to generate a first treated water when the COD concentration value of the measured coke waste water is 3,000 ppm or less; And
And supplying the first treated water to a post-treatment unit to generate a second treated water.
8. The method of claim 7,
When the COD concentration value of the measured coke waste water exceeds 3,000 ppm,
Introducing the coke wastewater into the organic material removal unit to reduce COD;
Introducing the COD-reduced coke effluent into the biological treatment unit to produce a first treated water; And
And supplying the first treated water to a post-treatment unit to generate a second treated water.
KR1020150134349A 2015-09-23 2015-09-23 Apparatus for treating cokes oven waste water and treatment method for cokes oven waste water using the same KR20170035473A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107188295A (en) * 2017-06-02 2017-09-22 珠海路德通环保科技有限公司 Preprocess method before a kind of coking chemical waste water is biochemical
KR20210033106A (en) * 2019-09-17 2021-03-26 주식회사 포스코 Method for eliminating pollutant from solution

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107188295A (en) * 2017-06-02 2017-09-22 珠海路德通环保科技有限公司 Preprocess method before a kind of coking chemical waste water is biochemical
KR20210033106A (en) * 2019-09-17 2021-03-26 주식회사 포스코 Method for eliminating pollutant from solution

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